Service Layer Mobility Management Of Applications

A first apparatus comprising a processor, a memory, and computer-executable instructions stored in the memory which, when executed by the processor, cause the first apparatus to:

• provide, on a communications network, a first service layer instance;
• register, to the first service layer instance, a second service layer instance, the second service layer instance residing on a second apparatus in the communication network;
• register, to the first service layer instance, a third service layer instance, the third service layer instance residing on a third apparatus in the communication network;
• receive, from the second service layer instance, a first request, wherein the first request is a first registration announcement request pertaining to the registration of an Application Entity (AE) to the second service layer instance;
• create, on the first service layer instance, a first AE registration announcement resource;
• receive, from the third service layer instance, a second request, the second request being a second registration announcement request and pertaining to the registration of the AE registering to the third service layer instance;
• create, on the first service layer instance, a second AE registration announcement resource;
• and
• link the first AE registration announcement resource to the second AE registration announcement resource.